WO2012169565A1

WO2012169565A1 - Snow guard for solar cell module, structure for mounting snow guard for solar cell module, and photovoltaic power system

Info

Publication number: WO2012169565A1
Application number: PCT/JP2012/064622
Authority: WO
Inventors: 義博荒蒔; 佐野　省吾
Original assignee: シャープ株式会社
Priority date: 2011-06-07
Filing date: 2012-06-07
Publication date: 2012-12-13
Also published as: JP5052685B1; JP2012255254A

Abstract

This snow guard (6) is to be mounted on a solar cell module (5). The snow guard is equipped with: a snow guard wall section (6a) that is mounted upright on the solar cell module (5); a craw section (6e) that is inserted into a space (SP) formed between the inner side of a frame (8) of the solar cell module (5) and a solar cell panel (7); and an engagement section (6g) that engages with the outer side of the frame (8) of the solar cell module (5).

Description

Solar cell module snow stopper, solar cell module snow stopper mounting structure, and solar power generation system

The present invention relates to a snow stopper for a solar cell module provided on a roof or the like, a structure for attaching a snow stopper for a solar cell module, and a solar power generation system.

In areas where there is a large amount of snow, a snow guard is provided on the roof eaves to prevent or suppress snow fall so that damage caused by falling snow on the roof does not reach passers-by or objects. Sometimes. Moreover, when the solar cell module is installed on the roof, since snow accumulates and falls on the solar cell module, a snow stopper may be provided on the solar cell module.

For example, in Patent Document 1, a cover is inserted and attached between a plurality of solar cell modules, and a cover having a snow stop portion is applied as this cover to prevent snow from falling by the snow stop portion of the cover or Suppressed.

In Patent Document 2, the snow stopper member is screwed to the frame of the solar cell module, and the snow stopper member prevents or suppresses snow falling.

Japanese Patent Publication “JP 2000-345668 A” Japanese Patent Publication “Japanese Patent Laid-Open No. 2006-278671”

However, the snow stopper of Patent Document 1 is a part of the cover, and the cover is inserted between the solar cell modules and attached. Therefore, it cannot be said that the attaching operation is easy. Moreover, since the thing which does not have a snow stopper part and the thing which does not have are selectively used as a cover, the kind of cover increases. Furthermore, holes and openings where rainwater and dirt pass are formed in the snow stopper, but it is difficult to adjust the positions and number of these holes and openings on the site.

Further, since the snow stop member of Patent Document 2 needs to be screwed to the frame, when a large number of snow stop members are provided, the installation work becomes complicated.

Therefore, the present invention has been made in view of the above-described conventional problems, and is a snow for a solar cell module that can be easily attached and can be easily adjusted at the site. It is an object of the present invention to provide a stopper, a snow stopper mounting structure for a solar cell module, and a solar power generation system.

In order to solve the above-described problems, the present invention provides a snow stopper that is installed in a solar cell module, the snow stopper wall portion standing on the solar cell module, and the inside of the frame of the solar cell module. And a claw portion that enters a gap between the solar cell panel and the solar cell panel.

When the nail part of the snow stopper of the present invention is placed on the upper surface (light-receiving surface) of the solar cell module and the nail part is moved in the frame direction of the solar cell module, the nail part becomes the frame of the solar cell module. It penetrates inside and the claw is caught on the frame. Thereby, the snow stopper is locked and attached to the frame of the solar cell module.

Further, the present invention is a snow stopper installed in a solar cell module, comprising a snow stopper wall portion standing on the solar cell module, an inner side of a frame of the solar cell module, and a solar cell panel A claw portion that enters the gap and an engaging portion that engages with the outside of the frame of the solar cell module are provided.

For such a snow stopper according to the present invention, when the nail portion is placed on the upper surface (light receiving surface) of the solar cell module and the nail portion is moved in the frame direction of the solar cell module, the nail portion becomes the solar cell module. The claw is caught in the frame. At the same time, the engaging portion engages with the outside of the frame of the solar cell module, the frame of the solar cell module is sandwiched between the engaging portion and the claw portion, and the snow stopper is reliably supported.

In addition, when snow accumulates on the solar cell module in a state where the snow stoppers of the present invention are attached to the frame of the solar cell module, the snow stopper wall portion prevents or suppresses snow falling. At this time, since the claw portion is caught on the frame, the snow stopper is not detached even if a snow load is applied.

Furthermore, when the frame of the solar cell module is sandwiched between the engaging part and the claw part, not only the snow stopper will not come off even if snow load is applied, but also the snow stopper will be applied even if wind load from the eave direction is applied. I can't remove it.

Moreover, since the nail | claw part of a snow stopper is hooked on the frame of a solar cell module, a snow stopper can be removed from a frame of a solar cell module with a small force by moving a snow stopper in the direction which pulls out a nail | claw part. it can. Alternatively, the nail portion of the snow stopper is hooked on the frame of the solar cell module, and the engagement portion of the snow stopper is engaged with the outside of the frame of the solar cell module. By moving the snow stopper in the pulling direction, the snow stopper can be removed from the frame of the solar cell module with a small force. For this reason, after installing a solar cell module, a snow stopper can be retrofitted, a snow stopper can be removed, or the position of a snow stopper can be changed. Moreover, since the snow stopper can be easily attached and detached and can be retrofitted, the snow stopper can be easily increased or decreased.

Moreover, in the snow stopper of the solar cell module of the present invention, the engaging portion engages with the irregularities formed on the outside of the frame of the solar cell module.

In this case, the engaging portion reliably engages with the irregularities on the outside of the frame of the solar cell module.

For example, in the snow stopper of the solar cell module of the present invention, the engaging portion engages with the outer lower end of the frame of the solar cell module.

Furthermore, the snow stopper of the solar cell module of the present invention includes an elastic portion that presses the frame of the solar cell module from above.

In a state where the snow stopper is attached to the frame of the solar cell module, such an elastic portion presses the frame of the solar cell module, so that there is no rattling between the snow stopper and the frame of the solar cell module.

Further, in the snow stopper of the solar cell module of the present invention, the snow stopper wall portion is formed by folding a single sheet metal into a double.

This makes it possible to improve the strength of the snow retaining wall.

Next, the present invention relates to a snow cell mounting structure for a solar cell module, wherein the solar cell module includes a solar cell panel and a frame provided on a peripheral edge of the solar cell panel, The tool includes a snow stopper wall portion standing on the solar cell module, and a claw portion that enters a gap between the inner side of the frame of the solar cell module and the solar cell panel, and the claw portion of the snow stopper device. The snow stopper is attached to the frame of the solar cell module by being inserted and hooked between the frame of the solar cell module and the solar cell panel.

Further, the present invention is a structure for attaching a snow stopper for a solar cell module, wherein the solar cell module includes a solar cell panel and a frame provided at a periphery of the solar cell panel, and the snow stopper Is engaged with the snow retaining wall portion erected on the solar cell module, the claw portion entering the gap between the inside of the solar cell module frame and the solar cell panel, and the outside of the frame of the solar cell module Engaging the snow stopper with the nail portion of the snow stopper between the frame of the solar cell module and the solar cell panel, and engaging the engaging portion of the snow stopper with the outside of the frame of the solar cell module. The snow stopper is attached to the frame of the solar cell module.

Moreover, in the mounting structure for the snow stopper of the solar cell module of the present invention, the engaging portion is engaged with the unevenness formed on the outside of the frame of the solar cell module.

Furthermore, in the solar cell module snow stopper mounting structure of the present invention, the engaging portion is engaged with the outer lower end of the solar cell module frame.

Further, the snow stopper mounting structure for the solar cell module of the present invention includes an elastic portion that presses the frame of the solar cell module from above.

Also in such a mounting structure of the present invention, it is possible to obtain the same effects as the snow stopper of the solar cell module of the present invention.

Next, the present invention is a photovoltaic power generation system including a solar cell module and a snow stopper that are supported in an inclined manner, and the solar cell module is provided at the periphery of the solar cell panel and the solar cell panel. The snow stopper is provided with a snow stopper wall portion standing on the solar cell module, and a claw portion that enters a gap between the inside of the solar cell module frame and the solar cell panel. The claws are attached to the frame of the solar cell module.

In addition, the present invention is a solar power generation system including a solar cell module and a snow stopper that are supported at an inclination, and the solar cell module is provided on a solar cell panel and a peripheral edge of the solar cell panel. A snow stop wall portion standing on the solar cell module, a claw portion that enters a gap between the inside of the solar cell module frame and the solar cell panel, An engaging portion that engages with the outside of the frame of the solar cell module, and is attached to the frame of the solar cell module using the claw portion and the engaging portion.

Also in such a photovoltaic power generation system of the present invention, it is possible to obtain the same effect as the snow stopper of the solar cell module of the present invention.

According to the present invention, when the claw portion of the snow stopper is placed on the upper surface (light-receiving surface) of the solar cell module and the claw portion is moved in the frame direction of the solar cell module, the claw portion of the frame of the solar cell module It penetrates into the inside, the claw is caught on the frame, and the snow stopper is locked and attached to the frame of the solar cell module. Alternatively, when the claw part of the snow stopper is placed on the upper surface (light-receiving surface) of the solar cell module and the claw part is moved in the frame direction of the solar cell module, the claw part enters the inside of the frame of the solar cell module. Then, the claw part is caught on the frame, and at the same time, the engaging part is engaged with the outside of the frame of the solar cell module, the frame of the solar cell module is sandwiched between the engaging part and the claw part, and the snow stopper is It is definitely supported.

When snow is piled up on the solar cell module with such a snow stopper attached to the frame of the solar cell module, the snow stopper wall portion prevents or suppresses snow falling. At this time, since the claw portion is caught on the frame, the snow stopper is not detached even if a snow load is applied.

In addition, when the frame of the solar cell module is sandwiched between the engaging part and the claw part, not only the snow stopper will not come off even if snow is applied, but also the snow I can't remove it.

It is a perspective view which shows the solar power generation system to which one Embodiment of the snow stopper of the solar cell module of this invention is applied. It is a perspective view which shows the solar cell module in the solar energy power generation system of FIG. It is sectional drawing which expands and shows the frame of a solar cell module. It is a perspective view which expands and decomposes | disassembles and shows the fixing structure of the solar cell module with respect to the horizontal rail in the solar power generation system of FIG. It is a perspective view which shows the horizontal rail of FIG. It is sectional drawing which shows the horizontal rail of FIG. It is sectional drawing which shows the state which fixed the two solar cell module arrange | positioned on both sides of the horizontal rail using the fixing metal fitting and the plate nut. It is a perspective view which shows one Embodiment of the snow stopper of the solar cell module of this invention. It is a side view which shows the snow stopper of FIG. (A), (b) is a figure which shows the procedure for attaching the snow stopper of FIG. 8 to the frame of a solar cell module. It is a perspective view which illustrates the solar cell module to which two snow stoppers were attached. It is a figure which shows the relationship between the height h of the snow stopper wall part of a snow stopper, the photoelectric converting layer area | region M of a solar cell module, the sunlight SL which injects at the time of the south in the winter solstice, and the inclination | tilt angle (alpha) of a roof. It is sectional drawing which shows the 1st modification of a snow stopper, and the 1st modification of the frame of a solar cell module. It is sectional drawing which shows the 2nd modification of a snow stopper, and the 2nd modification of the frame of a solar cell module. It is sectional drawing which shows the 3rd modification of a snow stopper, and the 3rd modification of the frame of a solar cell module.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a solar power generation system to which an embodiment of a snow stopper for a solar cell module of the present invention is applied. In this solar power generation system 1, four vertical beams 3 are spaced apart from each other on a roof 2 and fixed in parallel with each other, and three horizontal beams 4 are spaced apart from each other by a certain interval. The solar cell modules 5 are fixedly arranged parallel to each other, and four solar cell modules 5 are bridged and fixed between the three horizontal rails 4.

The longitudinal direction of each vertical beam 3 coincides with the water flow direction A of the roof 2, and the longitudinal direction of each horizontal beam 4 coincides with the direction orthogonal to the water flow direction A. The first row, the second row, and the third row of cross beams 4 are arranged from the downstream side to the upstream side in the water flow direction A. Two sheets in the first row are arranged between the first and second cross beams 4. The solar cell modules 5 are spanned and fixed, and the two solar cell modules 5 in the second row are spanned and fixed between the horizontal beams 4 in the second and third rows. The module 5 is inclined along the water flow direction A.

The snow stopper 6 of this embodiment is attached to a plurality of locations of the frame of each solar cell module 5 in the first row. Each of the snow stoppers 6 has a snow stopper wall portion that protrudes vertically upward with respect to the upper surface (light receiving surface) of the solar cell module 5. Prevents or suppresses snow falling on the module 5.

The vertical beam 3 may be fixed to the roof 2 by any known method or structure. For example, the vertical rail 3 can be fixed by a metal fitting that passes through the roof tile 2 and is connected to a rafter. Further, the horizontal beam 4 can be fixed to the vertical beam 3 by any known method or structure. For example, the vertical beam 3 and the horizontal beam 4 can be connected and fixed with bolts and nuts. Furthermore, the structure for fixing the solar cell module 5 to the horizontal rail 4 and the structure for fixing the snow stopper 6 to the solar cell module 5 will be described in detail later.

FIG. 2 is a perspective view showing the solar cell module 5. As shown in FIG. 2, the solar cell module 5 includes a solar cell panel 7 that photoelectrically converts sunlight, and a frame 8 that borders and holds the solar cell panel 7.

For example, the solar cell panel 7 sandwiches a solar cell formed by sequentially laminating a transparent electrode film, a photoelectric conversion layer (semiconductor layer), and a back electrode film between two glass plates, and the end of each glass plate is sandwiched between them. It is sealed. The solar cell panel 7 will be described in more detail. A transparent electrode, a photoelectric conversion layer composed of a semiconductor layer, and a back electrode layer are laminated in this order on a glass substrate that is a light-transmitting substrate, and a solar cell is formed. The transparent glass substrate which is a protective plate is bonded to the back electrode layer side, and the space between the glass substrates is sealed. Alternatively, a solar battery cell sandwiched between one glass plate and a protective layer may be sealed.

FIG. 3 is an enlarged cross-sectional view showing the frame 8 of the solar cell module 5. The frame 8 is made of an aluminum material, and as shown in FIG. 3, a wall 11, an upper plate 12 provided at the upper end of the wall 11, and a bottom plate extending from the lower end of the wall 11 to the inside of the frame 8. 13. A shelf 11a is formed on the inner upper portion of the wall 11, and an insertion groove 11b facing the inside of the frame 8 is formed between the shelf 11a and the upper plate 12, and the end of the solar cell panel 7 is formed in the insertion groove 11b. The part is inserted and supported. Between the end portion of the solar cell panel 7 and the insertion groove 11b, an elastic sheet 14 for end face sealing and buffering is interposed. The end portion of the solar cell panel 7 is sealed by the elastic sheet 14, and the frame 8 Transmission of the shock to the end of the solar cell panel 7 is mitigated. In addition, a gap SP is formed between the upper surface (light receiving surface) of the solar cell panel 7 and the upper plate 12 of the frame 8 by the intervention of the elastic sheet 14.

Further, flat ribs 11c are formed below the upper plate 12 and outside the wall portion 11, and further below the ribs 11c are formed L-shaped protruding portions 11d that protrude toward the outside of the frame 8. The outer end portion of the L-shaped protrusion 11d faces upward.

FIG. 4 is an exploded perspective view showing a structure for fixing the solar cell module 5 to the cross rail 4 in FIG. As shown in FIG. 4, the fixing bracket 16 for supporting the frame 8 of the solar cell module 5 is fixed to the horizontal rail 4 by the plate nut 15 and the bolt 21.

The fixing bracket 16 has a bottom plate 16a, side walls 16b formed by vertically bending both sides of the bottom plate 16a, and a standing plate 16c formed by vertically bending one side of the bottom plate 16a.

A perforation 16d is formed in the bottom plate 16a. The depth of the bottom plate 16 a is slightly shorter than the width of the rail portion 4 b of the horizontal rail 4, and the bottom plate 16 a is disposed inside the rail portion 4 b of the horizontal rail 4.

Each receiving part 16e bent outward is formed in the upper end of each side wall 16b. The height of each receiving portion 16e is the same as or slightly lower than the first and

second pedestal portions

4e and 4g of the horizontal rail 4 when the bottom plate 16a of the fixing bracket 16 is placed on the rail portion 4b of the horizontal rail 4. It is set to be.

At the upper end of the standing plate 16c, a flange portion 16f bent toward the bottom plate 16a and an engagement portion 16g bent toward the opposite side of the flange portion 16f are formed. Two flanges 16f are provided on both sides of the upper end of the upright plate 16c, and one engaging portion 16g is provided at the center of the upper end of the upright plate 16c, and the two hooks 16f and one engaging portion 16g are alternately arranged. Is arranged. Each contact plate 16h is provided by being bent on both sides of the standing plate 16c.

FIGS. 5 and 6 are a perspective view and a cross-sectional view showing the horizontal rail 4. This crosspiece 4 is obtained by cutting and bending a single steel plate and plating it, and as shown in FIGS. 5 and 6, a boundary wall 4a formed by folding the steel plate at the center and overlapping two sheets is provided. Have. A rail portion 4b having a U-shaped cross section is formed on one side of the boundary wall 4a, and a long hole 4f is formed at the bottom of the rail portion 4b. The rail portion 4b has a width slightly wider than the depth of the fixing bracket 16, and the fixing bracket 16 can be disposed inside the rail portion 4b. The side wall 4c of the rail portion 4b is bent outward at a right angle, and the upper surface of the bent portion is a first pedestal portion 4e on which the frame 8 of the solar cell module 5 is placed.

Also, a second pedestal portion 4g on which the frame 8 of the solar cell module 5 is placed is formed on the other side of the boundary wall 4a of the horizontal rail 4. The 2nd base part 4g is formed in step shape, and is set to the same height as the 1st base part 4e. The boundary wall 4a stands perpendicular to the upper surfaces of the first and

second pedestals

4e and 4g.

FIG. 7 is a cross-sectional view showing a structure in which two solar cell modules 5 arranged with the horizontal rail 4 interposed therebetween are fixed to the horizontal rail 4 by using the fixing bracket 16.

As shown in FIGS. 4 and 7, the fixing bracket 16 has its bottom plate 16 a placed on the inner bottom surface of the rail portion 4 b of the horizontal beam 4, and its standing plate 16 c placed close to the boundary wall 4 a of the horizontal beam 4. Yes. Further, the plate nut 15 has its main plate 15a abutted against the outer bottom surface of the rail portion 4b of the horizontal beam 4, and the outside of the rail portion 4b of the horizontal beam 4 is sandwiched between the protruding

pieces

15b and 15c. . The bolt 21 is screwed into the screw hole 15 d of the plate nut 15 through the washer 22, the perforation 16 d of the fixing bracket 16, and the long hole 4 f of the horizontal rail 4, whereby the fixing bracket 16 is attached to the horizontal rail 4. It is fixed to the rail portion 4b.

The frame 8 of one solar cell module 5 is placed on the first pedestal portion 4e of the horizontal rail 4 and is in contact with each contact plate 16h of the fixture 16, and the L-shaped projection 11d of the frame 8 The outer end is pushed into the lower side of each flange 16 f of the fixing bracket 16, and the L-shaped protrusion 11 d of the frame 8 is hooked and locked to each flange 16 f of the fixing bracket 16.

Further, the frame 8 of the other solar cell module 5 is placed on the second pedestal portion 4g of the horizontal beam 4 and is in contact with the boundary wall 4a of the horizontal beam 4, so that the L-shaped projection 11d of the frame 8 The outer end portion is pushed into the lower side of the engaging portion 16 g of the fixing bracket 16, and the L-shaped projecting portion 11 d of the frame 8 is hooked and locked to the engaging portion 16 g of the fixing bracket 16.

Accordingly, the frame 8 of one solar cell module is placed on the first pedestal portion 4e of the horizontal beam 4 and the frame 8 of one solar cell module is locked to the flanges 16f of the fixing bracket 16, so that the horizontal beam 4 The frame 8 of the other solar cell module is placed on the second pedestal portion 4g, the frame 8 of the other solar cell module is locked to the engagement portion 16g of the fixing bracket 16, and the frame 8 of each solar cell module is It is fixed across the horizontal rail 4.

In FIG. 1, a plurality of fixing brackets 16 (not shown) are arranged and fixed to each horizontal rail 4, and two upper and lower sides of the frame 8 of the solar cell module 5 are provided for each solar cell module 5. Are fixedly supported by the fixing bracket 16.

Next, the snow stopper 6 of this embodiment will be described in detail. FIG.8 and FIG.9 is the perspective view and side view which show the snow stopper 6 of this embodiment.

This snow stopper 6 is obtained by cutting and bending a single steel plate (sheet metal) and plating it, and as shown in FIGS. A wall portion 6a, a main plate portion 6c bent at a right angle at one lower end 6b of the doubled steel plate forming the snow retaining wall portion 6a, and a doubled steel plate forming the snow retaining wall portion 6a. An engaging portion 6g that protrudes from the other lower end 6f and is bent into a Z-shape, a claw portion 6e that is folded back at one side 6d of the main plate portion 6c, and is formed on the lower surface side of the main plate portion 6c, and a main plate portion And two elastic portions 6i formed by bending the inner portions of the two U-shaped cuts 6h formed in 6c downward.

The snow retaining wall portion 6a is made by folding a single sheet metal into a double, and the strength of the snow retaining wall portion 6a is improved.

The main plate portion 6c is bent into a chevron before one side 6d, and further bent into a V shape at one side 6d. The claw portion 6e is a claw portion 6e on the front side of the side 6d, and the claw portion 6e is formed on the main plate portion 6c. A triangular engagement recess 6j is formed opposite the lower surface and inside the claw portion 6e.

The engaging portion 6g is bent into a Z-shape and has an engaging recess 6k facing the claw portion 6e or facing the claw portion 6e, and a calling portion 6m.

10 (a) and 10 (b) show a procedure for attaching the snow stopper 6 to the frame 8 of the solar cell module 5. FIG.

First, as shown in FIG. 10A, the engaging portion 6 g of the snow stopper 6 is placed on the upper plate 12 of the frame 8 of the solar cell module 5, and the claw portion 6 e of the snow stopper 6 is attached to the solar cell panel 7. The snow stopper 6 is placed on the upper surface (light-receiving surface), the snow stopper 6 is moved in the direction of the arrow B, and the engaging portion 6g of the snow stopper 6 is slid by the upper plate 12 of the frame 8, and the claw portion of the snow stopper 6 6e is slid on the upper surface of the solar cell panel 7.

With this sliding, when the engaging portion 6g of the snow stopper 6 reaches the outer end portion of the upper plate 12 of the frame 8 of the solar cell module 5, the engaging portion 6g is lowered in the direction C of the arrow. The outer end portion of the upper plate 12 of the frame 8 is guided by the calling portion 6m of the engaging portion 6g, and the outer end portion of the upper plate 12 slides into the engaging recess 6k of the engaging portion 6g, as shown in FIG. As shown to b), the outer side edge part (convex part) of the upper board 12 engages with the engaging recess 6k of the engaging part 6g. At the same time, as shown in FIG. 10 (b), the claw portion 6e of the snow stopper 6 enters the gap SP between the upper surface (light receiving surface) of the solar cell panel 7 and the upper plate 12 of the frame 8, and the claw portion 6e It catches on the inner end of the upper plate 12. Thereby, the frame 8 of the solar cell module 5 is sandwiched between the claw portion 6e and the engaging portion 6g of the snow stopper 6 and the snow stopper 6 is locked and attached to the frame 8 of the solar cell module 5, The snow stopper wall 6 a of the snow stopper 6 is projected on the frame 8 of the solar cell module 5.

Here, when the snow stopper 6 is attached to the frame 8 of the solar cell module 5 as shown in FIG. 10B, there is a slight gap between the claw portion 6e and the engaging portion 6g of the snow stopper 6. The frame 8 of the solar cell module 5 is sandwiched between the claw portion 6e and the engaging portion 6g by the elastic force of the snow stopper 6. That is, the distance between the claw portion 6e and the engaging portion 6g before sandwiching the frame 8 of the solar cell module 5 is the distance between the claw portion 6e and the engaging portion 6g after sandwiching the frame 8 of the solar cell module 5. The distance between the claw portion 6e and the engaging portion 6g is expanded by the elastic deformation of the snow stopper 6 so that the frame 8 of the solar cell module 5 is sandwiched therebetween, and the snow stopper 6, the frame 8 of the solar cell module 5 is sandwiched between the claw portion 6e and the engaging portion 6g. Thereby, shakiness of the roof of the snow stopper 6 in the inclination direction is prevented in FIG. In this state, when snow falls on the solar cell module 5, the claw portion 6e receives the snow load and the engaging portion 6g receives the load due to the wind pressure from the eave direction, so that the snow stopper 6 is stably supported. To be fixed.

In FIG. 10B, each elastic portion 6i of the snow stopper 6 is elastically deformed by being pressed against the upper plate 12 of the frame 8 of the solar cell module 5, and each elastic portion 6i that has been elastically deformed is deformed. The upper plate 12 of the frame 8 of the solar cell module 5 is pressed. Thereby, the rattling of the snow stopper 6 in FIG. 10B is prevented.

In this manner, the engaging portion 6g of the snow stopper 6 is placed on the upper plate 12 of the frame 8 of the solar cell module 5, and the claw portion 6e of the snow stopper 6 is placed on the upper surface of the solar cell panel 7. The snow stopper 6 can be locked to the frame 8 of the solar cell module 5 only by moving the snow stopper 6 and the snow stopper 6 can be attached to the frame 8 of the solar cell module 5 without rattling.

Further, after lifting the engaging portion 6g of the snow stopper 6 in the direction opposite to the arrow direction C shown in FIG. 10A, the snow stopper 6 is moved in the direction indicated by the arrow B shown in FIG. Can be removed easily from the frame 8 of the solar cell module 5 by moving in the opposite direction.

Therefore, after the solar cell module 5 is installed, the snow stopper 6 can be retrofitted, the snow stopper 6 can be removed, or the position of the snow stopper 6 can be changed. Moreover, since the snow stopper 6 is easy to attach and detach and can be retrofitted, the snow stopper 6 can be easily increased or decreased.

FIG. 11 is a perspective view illustrating the solar cell module 5 to which two snow stoppers 6 are attached. In FIG. 11, snow stoppers 6 are attached to two locations on one side (one side of the frame 8) that is below the inclination (water flow direction A) of the four sides of the solar cell module 5 and orthogonal to the inclination direction. The snow retaining wall portion 6 a of the stopper 6 protrudes from the frame 8 of the solar cell module 5.

FIG. 12 shows the height h of the snow-preventing wall 6a of the snow stopper 6 from the photoelectric conversion layer of the solar cell module 5, the photoelectric conversion layer region M of the solar cell module 5, and the sunlight SL incident at the time of the south and middle in the winter solstice. It is a figure which shows the relationship with the inclination-angle (alpha) of a roof and a roof.

The altitude of the sun during the winter solstice is the lowest throughout the year, the sunlight SL is most inclined and approaches the horizontal direction, and the length of the shadow of the snow stop wall 6a of the snow stop 6 is the longest. Further, the length of the shadow of the snow retaining wall 6a becomes longer as the roof inclination angle α becomes smaller. For this reason, assuming that the inclination angle α of the roof of a general house in an area where there is a lot of snow is a constant angle (average inclination angle), the solar cell from the shadow of the snow retaining wall portion 6a during the winter solstice The height h of the snow retaining wall portion 6a from which the photoelectric conversion layer region M of the module 5 is removed can be obtained, and by setting the height of the snow retaining wall portion 6a to this height h, It is possible to prevent the photoelectric conversion layer region M of the solar cell module 5 from entering the shadow of the snow retaining wall portion 6a when the power generation efficiency is high.

FIG. 13 is a cross-sectional view showing a first modification of the snow stopper and a first modification of the frame of the solar cell module 5. In FIG. 13, the snow stopper 6A of the first modified example forms the snow stopper wall portion 6a by folding the steel plate into a double shape. However, the snow stop wall portion 6a is separated by separating the double steel plate. In order to improve the strength of the snow stop wall 6a.

The frame 8A of the first modified example includes a wall portion 31, an upper plate 32 provided at the upper end of the wall portion 31, and a bottom plate 33 extending from the lower end of the wall portion 31 to the inside of the frame 8A. ing. A shelf 31a is formed on the inner upper portion of the wall 31, and an insertion groove 31b facing the inside of the frame 8A is formed between the shelf 31a and the upper plate 32, and the end of the solar cell panel 7 is formed in the insertion groove 31b. The part is inserted and supported. Between the end of the solar cell panel 7 and the insertion groove 31a, an elastic sheet 14 for end face sealing or buffering is interposed, and a gap SP is formed between the upper surface (light receiving surface) of the solar cell panel 7 and the upper plate 32 of the frame 8A. Is formed.

Further, an L-shaped projection 31d that protrudes toward the outside of the frame 8A is formed below the upper plate 32 and outside the wall 31, and the outer end of the L-shaped projection 31d faces upward. Yes.

The L-shaped projecting portion 31d facing the outside of the frame 8A is locked to each flange portion 16f of the fixing bracket 16 when the frame 8A is placed on the first pedestal portion 4e of the cross rail 4, and the frame 8A is When placed on the second pedestal portion 4g of the crosspiece 4, it is locked to the engaging portion 16g of the fixing bracket 16.

For the snow stopper 6A and the frame 8A of the solar cell module 5 as well, the engaging portion 6g of the snow stopper 6A is placed on the upper plate 32 of the frame 8A of the solar cell module 5, and the claw portion of the snow stopper 6A. 6e is placed on the upper surface of the solar cell panel 7, the snow stopper 6A is moved, and the outer end portion (convex portion) of the upper plate 32 of the frame 8A is engaged with the engaging recess 6k of the engaging portion 6g. At the same time, the claw portion 6e of the snow stopper 6A is inserted into the gap SP between the upper surface of the solar cell panel 7 and the upper plate 32 of the frame 8A, and the claw portion 6e is hooked on the inner end of the upper plate 32 of the frame 8A. The snow stopper 6A can be locked and attached to the frame 8A of the solar cell module 5, and the snow stopper 6A can be attached to the frame 8A of the solar cell module 5 without rattling. Further, the snow stopper 6A can be easily removed by the reverse procedure of attaching the snow stopper 6A.

FIG. 14 is a cross-sectional view showing a second modification of the snow stopper and a second modification of the frame of the solar cell module 5. In FIG. 14, the snow stopper 6B of the second modified example not only thickens the snow stopper wall portion 6a, but also omits the elastic portions 6i of the main plate portion 6c, similarly to the snow stopper 6A of FIG. is doing.

Further, the frame 8B of the second modified example has an appearance similar to that of the frame 8A of FIG. 13, but the upper plate 32B is made thicker.

For the snow stopper 6B and the frame 8B of the solar cell module 5 as well, the engaging portion 6g of the snow stopper 6B is placed on the upper plate 32B of the frame 8B of the solar cell module 5, and the claw portion of the snow stopper 6B. The snow stopper 6B can be locked and attached to the frame 8B of the solar cell module 5 simply by placing 6e on the upper surface of the solar cell panel 7 and moving the snow stopper 6B. Further, since the upper plate 32B is thick, the upper plate 32B is fitted into the inner space surrounded by the main plate portion 6c, the claw portion 6e, and the engaging portion 6g of the snow stopper 6B with almost no gap, and the snow stopper 6B is removed. It can be attached to the frame 8B of the solar cell module 5 without rattling. Furthermore, the snow stopper 6B can be easily removed by the reverse procedure when attaching the snow stopper 6B.

FIG. 15 is a cross-sectional view showing a third modification of the snow stopper and a third modification of the solar cell module 5. In FIG. 15, the snow stopper 6C of the third modified example is similar to the snow stopper 6B of FIG. 14 except that the snow stopper wall portion 6a is made thicker and each elastic portion 6i of the main plate portion 6c is omitted. Further, one of the wall portions 6p of the snow stopper wall portion 6a formed by folding the steel plate is further extended, and an engaging portion 6g is provided at the lower end of the wall portion 6p.

The frame 8C of the third modified example includes a wall portion 41, an upper plate 42 provided on the inner side of the upper end of the wall portion 41, and a bottom plate 43 extending from the lower end of the wall portion 41 to the inner side of the frame 8C. is doing. The outer wall surface of the wall part 41 is a flat surface. Further, a shelf 41a is formed on the inner upper portion of the wall 41, and the end of the solar cell panel 7 is inserted into and supported by the insertion groove 41b between the shelf 41a and the upper plate 42. Between the end of the solar cell panel 7 and the insertion groove 41b, an elastic sheet 14 for end face sealing or buffering is interposed, and a gap SP is formed between the upper surface of the solar cell panel 7 and the upper plate 42 of the frame 8C. .

In the case of such a snow stopper 6C and the frame 8C of the solar cell module 5, the snow stopper 6C is moved by placing the claw portion 6e of the snow stopper 6C on the upper surface of the solar cell panel 7 and moving the snow stopper 6C. The claw portion 6e of 6C can enter the gap SP between the upper surface of the solar cell panel 7 and the upper plate 42 of the frame 8C, and the claw portion 6e can be hooked on the inner end portion of the upper plate 42. One wall portion 6p of the wall portion 6a is lowered, and the outer end corner portion (convex portion) 8a of the frame 8C can be engaged with the engagement recess 6k of the engagement portion 6g. Can be attached to the frame 8C of the solar cell module 5 without rattling. Moreover, the snow stopper 6C can be easily removed by the reverse procedure when attaching the snow stopper 6C.

As shown in FIG. 15, assuming that the inclination angle α of the roof of a general house is a constant angle (average inclination angle), the snow stopper wall portion 6 a of the snow stopper 6 C at the time of the south and middle during the winter solstice. If the height h of the snow retaining wall portion 6a is determined such that the photoelectric conversion layer region M of the solar cell module 5 is removed from the shadow, and the height of the snow retaining wall portion 6a is set to this height h, the most throughout the year. It is possible to prevent the photoelectric conversion layer region M of the solar cell module 5 from entering the shadow of the snow retaining wall portion 6a when the power generation efficiency is high. Of course, the height of the snow stopper wall 6a can be set in the same manner for the

snow stoppers

6A and 6B shown in FIGS.

Moreover, in the snow stopper of the said embodiment and each modification, although the convex part of the frame 8 of the solar cell module 5 is engaged with the engaging recess 6k of the engaging part 6g, it is related with the engaging part 6g. A mating convex portion may be formed, and the engaging convex portion of the engaging portion 6g may be engaged with the concave portion of the frame 8 of the solar cell module 5. Alternatively, the engaging uneven portion may be formed in the engaging portion 6g, and the engaging uneven portion of the engaging portion 6g may be engaged with the convex concave portion of the frame 8 of the solar cell module 5.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. It is understood.

1 Photovoltaic system 2 Roof 3 Vertical beam 4 Horizontal beam

4a Boundary wall

4b Rail portion

4c Side wall 4e First pedestal portion 4f Long hole 4g Second pedestal portion 5

Solar cell modules

6, 6A, 6B, 6C Snow stopper 6a Snow stopper wall portion 6c Main plate portion

6e Claw portion

6g Engagement Part 6i elastic part 6i
7

Solar cell panel

8, 8A, 8B, 8C Frame

Claims

A snow stopper installed in a solar cell module,
A snow retaining wall portion standing on the solar cell module;
A snow stopper for a solar cell module, comprising a claw portion that enters a gap between the inside of the frame of the solar cell module and the solar cell panel.
A snow stopper installed in a solar cell module,
A snow retaining wall portion standing on the solar cell module;
A claw portion that enters the gap between the inside of the frame of the solar cell module and the solar cell panel,
A snow stopper for a solar cell module, comprising: an engaging portion that engages with an outside of a frame of the solar cell module.
A snow stopper for a solar cell module according to claim 2,
The snow stopper for a solar cell module, wherein the engaging portion engages with an unevenness formed outside the frame of the solar cell module.
A snow stopper for a solar cell module according to claim 2,
The snow stopper for a solar cell module, wherein the engaging portion engages with an outer lower end of a frame of the solar cell module.
A snow stopper for a solar cell module according to any one of claims 1 to 4,
A snow stopper for a solar cell module, comprising an elastic part that presses the frame of the solar cell module from above.
A snow stopper for a solar cell module according to any one of claims 1 to 5,
A snow stopper for a solar cell module, wherein the snow-preventing wall portion is formed by folding a single sheet metal into two sheets.
A mounting structure for a snow guard of a solar cell module,
The solar cell module includes a solar cell panel and a frame provided on the periphery of the solar cell panel,
The snow stopper includes a snow stopper wall portion standing on the solar cell module, and a claw portion that enters a gap between the inside of the solar cell module frame and the solar cell panel,
The snow of the solar cell module, wherein the claw portion of the snow stopper is inserted and hooked between the frame of the solar cell module and the solar cell panel, and the snow stopper is attached to the frame of the solar cell module. Stopper mounting structure.
A mounting structure for a snow guard of a solar cell module,
The solar cell module includes a solar cell panel and a frame provided on the periphery of the solar cell panel,
The snow stopper includes a snow stopper wall portion erected on the solar cell module, a claw portion that enters a gap between the inner side of the frame of the solar cell module and the solar cell panel, and a frame of the solar cell module. An engaging portion that engages with the outside,
The claw part of the snow stopper is inserted and hooked between the frame of the solar cell module and the solar cell panel, the engaging part of the snow stopper is engaged with the outside of the frame of the solar cell module, and the snow A mounting structure for a snow stopper for a solar cell module, wherein the stopper is attached to a frame of the solar cell module.
A structure for attaching a snow stopper for a solar cell module according to claim 8,
The structure for attaching a snow stopper for a solar cell module, wherein the engaging portion engages with an unevenness formed on the outside of the frame of the solar cell module.
A structure for attaching a snow stopper for a solar cell module according to claim 8,
The structure for attaching a snow stopper of a solar cell module, wherein the engaging portion engages with an outer lower end of a frame of the solar cell module.
A structure for attaching a snow stopper for a solar cell module according to any one of claims 7 to 10,
A structure for attaching a snow stopper for a solar cell module, comprising an elastic portion for pressing the frame of the solar cell module from above.
A solar power generation system including a solar cell module and a snow stopper supported by being inclined,
The solar cell module includes a solar cell panel and a frame provided on the periphery of the solar cell panel,
The snow stopper includes a snow stopper wall portion erected on the solar cell module, a claw portion that enters a gap between the inner side of the frame of the solar cell module and the solar cell panel, and uses the claw portion. The solar power generation system is attached to a frame of the solar cell module.
A solar power generation system including a solar cell module and a snow stopper supported by being inclined,
The solar cell module includes a solar cell panel and a frame provided on the periphery of the solar cell panel,
The snow stopper includes a snow stopper wall portion erected on the solar cell module, a claw portion that enters a gap between the inner side of the frame of the solar cell module and the solar cell panel, and a frame of the solar cell module. And an engaging portion that engages with the outside, and is attached to a frame of the solar cell module using the claw portion and the engaging portion.